Author Archives: Erick Guerra

Planning Methods: Loading and examining data

This page describes how to upload and look at data in the R package. First, we will downlaod a CSV of UN population estimates on central African cities to import into R: Central Africa West. The first thing to do … Continue reading

Posted in Planning Methods | Comments Off on Planning Methods: Loading and examining data

Exploring US bus ridership with the National Transit Database

I frequently use the National Transit Database for analysis or quick summaries of key information about public transportation in the US. I also have my students use it to perform a back-of-the-envelope cost benefit analysis for a proposed light rail … Continue reading

Posted in Transportation Planning | Tagged | Comments Off on Exploring US bus ridership with the National Transit Database

National Transit Database panel by system, mode, and service

This page contains links to a long-formatted panel of the National Transit Database’s TS2.1 – Service Data and Operating Expenses Time-Series by Mode. I maintain the NTD data conventions, so that the column names match the NTD’s data glossary. I … Continue reading

Posted in Transportation Planning | Tagged | Comments Off on National Transit Database panel by system, mode, and service

The New Suburbs: Evolving travel behavior, the built environment, and subway investments in Mexico City

Mexico City is a suburban metropolis, yet most of its suburbs would be unfamiliar to urbanists accustomed to thinking about US metropolitan regions. Mexico City’s suburbs are densely populated—not thinly settled—and its residents rely primarily on informal transit rather than … Continue reading

Posted in Uncategorized | Leave a comment

Is a Half-Mile Circle the Right Standard for TODs?

Planners and researchers use transit catchment areas—the land around stations—as geographic units for predicting ridership, assessing the impacts of transit investments and, recently, for designing transit-oriented developments (TODs). In the US, a half-mile-radius circle has become the de facto standard … Continue reading

Posted in Uncategorized | Leave a comment

Accessibility, it’s not just a wonkish term for being near stuff

I was recently at a transportation conference, where one of the speakers admonished academics for not doing more to get their research out the academy and into the hands of policy makers and the public. He compared this with think … Continue reading

Posted in Uncategorized | Leave a comment

Informal Public Transportation Networks in Three Indonesian Cities

“As Indonesian cities today become more prosperous, the demand for mobility among the urban poor is rapidly growing. This is nowhere more the case than in Jakarta – each day city streets become frozen with congestion. Government efforts to supply … Continue reading

Posted in Uncategorized | Leave a comment

2011 Tranportation Research Board Presentation: Valuing Transit

A preview of the presentation is available here. I’ve also uploaded a low-resolution pdf.

Posted in Uncategorized | Leave a comment

Kill a camel. Save the world.

I recently read this AP story in the Boston Globe. Apparently, the Australian government is considering awarding carbon credits for killing wild Australian camels. Each year, every six camels produces about the same amount of carbon as an average American … Continue reading

Posted in Uncategorized | Leave a comment

To T or not to T

Robert Cervero and I recently published a piece in the Journal of Public Works Management & Policy where we make some back-of-the envelope estimations of the costs and benefits of rail projects in American cities. The article responds to another … Continue reading

Posted in Uncategorized | Leave a comment